ISO MB cylinder head

1941 - 1945, MB, GPW, Wanted jeeps or parts... list your needs.
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D_Conrad
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ISO MB cylinder head

Post by D_Conrad » Sat Mar 14, 2020 3:20 pm

I am looking for a cylinder head for my February 43 MB. I have a late war MB cylinder head for trade. Located in Tucson Arizona. Not sure of the casting date. If anybody can tell me where to locate that. But it does say both jeep and willys on it.
Daniel

1943 Willys MB (slow restoration in progress)
viewtopic.php?t=273387


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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Wed Apr 01, 2020 8:54 pm

The casting date is in Month/Day (ie, 9/5 for example in my photo) on the upper left corner above the casting number (639660 or 639660c for MB heads).
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AC6E3ED0-4BBF-4225-8913-23129D495179.jpeg
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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D_Conrad
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Re: ISO MB cylinder head

Post by D_Conrad » Tue May 05, 2020 9:23 am

Still searching
Daniel

1943 Willys MB (slow restoration in progress)
viewtopic.php?t=273387

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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Thu May 07, 2020 2:29 pm

What is the date of your late war head?
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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D_Conrad
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Re: ISO MB cylinder head

Post by D_Conrad » Fri May 08, 2020 7:41 am

Michael O. wrote:
Thu May 07, 2020 2:29 pm
What is the date of your late war head?
Looks like 3 24
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33772.jpeg
Daniel

1943 Willys MB (slow restoration in progress)
viewtopic.php?t=273387

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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Fri May 08, 2020 9:54 am

That head has casting characteristics that are consistent with similar MB hads cast in 1945. There are noticeable differences with heads cast during the same March time period from 1944. I can say with absolute certainty that you head was indeed cast on March 24, 1945. It would be appropriate for an MB delivered in mid to late April 1945. Additionally it would be appropriate for an MB engine cast in the second or third week of March 1945.

I hope this helps you and others.
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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Re: ISO MB cylinder head

Post by Scrumps » Fri May 08, 2020 10:14 am

Hi,

Look here:-

http://ww2jeeps.com/htm/heads.htm

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Dec '42 Willys MB
Aug ‘44 Willys MB
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D_Conrad
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Re: ISO MB cylinder head

Post by D_Conrad » Fri May 08, 2020 4:57 pm

So I need a January 43 maybe december 42 head for my early February MB?
Daniel

1943 Willys MB (slow restoration in progress)
viewtopic.php?t=273387

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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Fri May 08, 2020 8:34 pm

I would recommend a Jan ‘43 head, yes. You can get more specific if you care to. What’s the casting date of the engine? Is it a Jan ‘43 block?
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Fri May 08, 2020 8:38 pm

Scrumps wrote:
Fri May 08, 2020 10:14 am
Hi,

Look here:-

http://ww2jeeps.com/htm/heads.htm

Scrumps
That page is good for general identification but lacks certain specifics...just be aware.
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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D_Conrad
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Re: ISO MB cylinder head

Post by D_Conrad » Sat May 09, 2020 7:39 am

Michael O. wrote:
Fri May 08, 2020 8:34 pm
I would recommend a Jan ‘43 head, yes. You can get more specific if you care to. What’s the casting date of the engine? Is it a Jan ‘43 block?
I'm honestly not sure how to tell. Where is that located?
Daniel

1943 Willys MB (slow restoration in progress)
viewtopic.php?t=273387

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Michael O.
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Re: ISO MB cylinder head

Post by Michael O. » Sat May 09, 2020 9:54 am

The serial number would indicate a lot also but the casting date is located just ahead of the casting numbers, on the lower right side of the block. There is also a machining date on the bottom of the block on the machined oil pan surface near the rear corner by bearing retainer.
Michael O’Connell

1941 Dodge WC4 8668603
1941 Ford GP 15126
1942 Willys MB 111414
1942 Ford GPW 2647
1942 Ford GPW 66380
1943 Willys MB 201969
1943 Ford GPW 104111
1943 Ford GPW 108542
1944 Willys MB 369488
1944 Willys MB 379204

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Bangle 99
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Re: ISO MB cylinder head

Post by Bangle 99 » Tue Jun 09, 2020 7:34 pm

D. Conrad,

I have a block machined 2/4/43 if your block ends up being early Jan 43 or late Dec 42.


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James D Teel II
Retired Police Sergeant/Bomb Tech
SFC OKARNG
Edmond, Oklahoma
'43 Willys MB/ITM jeep
‘43 SS Cars No1 Mk1 Lightweight Trailer
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James Teel
Retired Police Sergeant/Bomb Tech
SFC OKARNG
Edmond, Oklahoma
'43 Willys MB/ITM jeep
‘42 SS Cars lightweight trailer
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